freightliner COLUMBIA CL112 Maintenance Manual page 89

Wheels and Tires
40–01 Wheel Nut Check
IMPORTANT: After a wheel has been installed,
the wheel nut torque must be rechecked after
50 to 100 miles (80 to 160 km) of operation.
See Table 1 for disc wheel nut torque specifications,
and see Fig. 1 for the wheel nut tightening se-
quence.
CAUTION
Insufficient wheel nut (rim nut) torque can cause
wheel shimmy, resulting in wheel damage, stud
breakage, and extreme tire tread wear. Excessive
wheel nut torque can break studs, damage
threads, and crack discs in the stud hole area.
Use the recommended torque values, and follow
the tightening sequence shown in
Description
10-Hole and 8-Hole Hub-Piloted Disc Wheel With Two-Piece Flange Nuts
Front and Rear Wheel Nut
Nuts on Double-Threaded Wheel Studs
Double-Threaded Wheel Stud Retainer Nut
Front Wheel Nut
Rear Wheel Inner Nut
Rear Wheel Outer Nut
* Torque values for hub-piloted wheels are given for lubricated threads. Lubricate threads with SAE 30W engine oil. Do not apply thread lubricant to ball seats
of the nuts and wheels. Wipe it off if it is applied accidentally.
†
Torque values for stud-piloted wheels are given for clean, dry threads.
Columbia Maintenance Manual, April 2005
Fig. 1.
Disc Wheel Fastener Torques
Nut Size
M22 x 1.5
M22 x 1.5
3/4–16
10-Hole Stud-Piloted Disc Wheel With Inner and Outer Nuts
1-1/8–16
3/4–16
1-1/8–16
Table 1, Disc Wheel Fastener Torques
When checking wheel nuts on a dual disc assembly,
remove one outer nut at a time, tighten the inner nut,
then reinstall and tighten the outer nut. Repeat this
procedure for all wheel nuts, using the tightening se-
quence shown in Fig. 1.
2
1
4
7
6
5
3 8
A
09/18/2001
A. 8-Stud Disc Wheel
Fig. 1, Wheel Nut Tightening Sequence
Wheel Manufacturer
All
All
All
All
All
All
40
1
10
8
3
5
7 9
2
B
f400164
B. 10-Stud Disc Wheel
Torque: lbf·ft (N·m)
*
450–500 (610–678)
390–450 (529–610)
175–200 (235–270)
†
450–500 (610–678)
450–500 (610–678)
450–500 (610–678)
6
4
40/1